Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria
Use of small doses of imazapyr and pyrithiobac for seed coatings of imazapyr-resistant maize hybrids (IR-Maize) offers an effective means to control Striga hermonthica. Field trials were conducted in Bauchi and Kano States of Nigeria in 2014 and 2015 under heavy Striga infestation to evaluate the po...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/109001 |
| _version_ | 1855516552922660864 |
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| author | Kamara, A.Y. Menkir, A. Chikoye, David Solomon, R. Tofa, A.I. Omoigui, L.O. |
| author_browse | Chikoye, David Kamara, A.Y. Menkir, A. Omoigui, L.O. Solomon, R. Tofa, A.I. |
| author_facet | Kamara, A.Y. Menkir, A. Chikoye, David Solomon, R. Tofa, A.I. Omoigui, L.O. |
| author_sort | Kamara, A.Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Use of small doses of imazapyr and pyrithiobac for seed coatings of imazapyr-resistant maize hybrids (IR-Maize) offers an effective means to control Striga hermonthica. Field trials were conducted in Bauchi and Kano States of Nigeria in 2014 and 2015 under heavy Striga infestation to evaluate the potential effectiveness of herbicide coated hybrids maize on Striga control in farmers’ field. Results showed that herbicide coated seeds reduced number of emerged Striga per m2 and Striga damage symptoms in farmers’ fields in all the locations. In Kano the number of emerged Striga was 4.9 to 7.9 times less in herbicide treated hybrids in comparison with those of the same hybrids planted without herbicide treatment. The Striga-resistant open pollinated variety (OPV) (TZL COMP1 SYN) had 6.7 to 8.0 times more Striga than the treated hybrids. In Bauchi, the number of emerged Striga on the untreated IR-maize hybrids were over four-times higher on the treated IR-maize hybrids than on the untreated hybrids. The Striga-resistant OPV check had four-times more Striga than the treated IR-maize hybrids and twice more than the untreated IR-maize hybrids across the two years. However, the effects of herbicide seed coating on grain yields were not consistent because of strong seasonal effects. The result revealed that coating of imazapyr-resistant hybrid maize seeds with imazapyr was effective in reducing Striga infestation in farmers’ fields. Although herbicide seed coating did not give consistent yield advantages of the hybrids over the untreated checks, a combination of herbicide seed treatment and genetic resistance to Striga would serve as an effective integrated approach that could significantly reduce the parasite seed bank from the soil and prevent production of new seeds. The IR-hybrids and the OPV checks contained Striga resistance/tolerant genes that protected them against drastic yield loss in the Striga infested fields in both Bauchi and Kano. |
| format | Journal Article |
| id | CGSpace109001 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1090012025-11-11T10:05:04Z Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria Kamara, A.Y. Menkir, A. Chikoye, David Solomon, R. Tofa, A.I. Omoigui, L.O. maize striga hermonthica seeds striga nigeria cereals imazapyr seed coating seed pelleting food science Use of small doses of imazapyr and pyrithiobac for seed coatings of imazapyr-resistant maize hybrids (IR-Maize) offers an effective means to control Striga hermonthica. Field trials were conducted in Bauchi and Kano States of Nigeria in 2014 and 2015 under heavy Striga infestation to evaluate the potential effectiveness of herbicide coated hybrids maize on Striga control in farmers’ field. Results showed that herbicide coated seeds reduced number of emerged Striga per m2 and Striga damage symptoms in farmers’ fields in all the locations. In Kano the number of emerged Striga was 4.9 to 7.9 times less in herbicide treated hybrids in comparison with those of the same hybrids planted without herbicide treatment. The Striga-resistant open pollinated variety (OPV) (TZL COMP1 SYN) had 6.7 to 8.0 times more Striga than the treated hybrids. In Bauchi, the number of emerged Striga on the untreated IR-maize hybrids were over four-times higher on the treated IR-maize hybrids than on the untreated hybrids. The Striga-resistant OPV check had four-times more Striga than the treated IR-maize hybrids and twice more than the untreated IR-maize hybrids across the two years. However, the effects of herbicide seed coating on grain yields were not consistent because of strong seasonal effects. The result revealed that coating of imazapyr-resistant hybrid maize seeds with imazapyr was effective in reducing Striga infestation in farmers’ fields. Although herbicide seed coating did not give consistent yield advantages of the hybrids over the untreated checks, a combination of herbicide seed treatment and genetic resistance to Striga would serve as an effective integrated approach that could significantly reduce the parasite seed bank from the soil and prevent production of new seeds. The IR-hybrids and the OPV checks contained Striga resistance/tolerant genes that protected them against drastic yield loss in the Striga infested fields in both Bauchi and Kano. 2020 2020-08-12T08:17:46Z 2020-08-12T08:17:46Z Journal Article https://hdl.handle.net/10568/109001 en Open Access application/pdf MDPI Kamara, A.Y., Menkir, A., Chikoye, D., Solomon, R., Tofa, A.I. & Omoigui, L.O. (2020). Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria. Agriculture, 10(3), 1-9. |
| spellingShingle | maize striga hermonthica seeds striga nigeria cereals imazapyr seed coating seed pelleting food science Kamara, A.Y. Menkir, A. Chikoye, David Solomon, R. Tofa, A.I. Omoigui, L.O. Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title | Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title_full | Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title_fullStr | Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title_full_unstemmed | Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title_short | Seed dressing maize with imazapyr to control Striga hermonthica in farmers’ fields in the savannas of Nigeria |
| title_sort | seed dressing maize with imazapyr to control striga hermonthica in farmers fields in the savannas of nigeria |
| topic | maize striga hermonthica seeds striga nigeria cereals imazapyr seed coating seed pelleting food science |
| url | https://hdl.handle.net/10568/109001 |
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